Knife Fighting Training SAMI Combat Systems – Knife Fighting Concept – Instructorcourse Day 2 – Impressions Posted on September 3, 2017 by enginejuan 03 Sep The knife is one of the oldest weapons known to mankind — and one of the most dangerous. You will find knives used in all cultures all over the world, used by … Self Defense against a 6’4″ Attacker Paraplegic Self-Defense #9 Drills: Ground Flow Pressure